Lithographing and printing roller.



No. 725,971. I

PA'.lEN-"l-ED AP R."21, 1903. A. W. KLING. LITHOGRAPHING, AND PRINTINGROLLER.

nf. INVENTQR.

H0 MODEL.

WITN 5555.5

( ZDR' UNITED STATES .PATENT OFFICE.

ALOYS W. KLING, ,OF DAYTON, OHIO.

LITHQGRAPHING AND' PRINTING ROLLER.

SIECIFICATION form-ing part of Letters Patent'No. 725,971, dated .April21, 1903.

Application filed December 29, 1902. Serial No. 136,899. (No model.)

T0 all whom Yit 11/1/1/3/1007-1'06717/7.- i Be it known that I, ALOYS W.KLING, a citi'- zen of the United States, residing at Dayton,

in the county of Montgomery and State of Ohio, have invented certain newand useful Improvements in Lithographing andrPrinting Rollers; and Idodeclare the followingto be a full, clear, and exact description of the:

invention, such as will enable others skilled in the art to which itappertains to makerand use the same, reference being had to the ac-lcompanying drawings,and to the letters of reference marked thereon,which-form a part of this speciiication.

This invention relates to new and useful improvements in pneumaticrollers for litho- No. 710,327, issued to myself September 30,

The present improvements relate solely to. the interior construction;and the object is'i to so construct the interior inflatable member thatwhen pressure is exerted on any particular portionl thereof the airwillnot be driven or forced out of that particular part and crowded intoother portions, but will be resisted by the surface of the core A in theline of such pressure. It is obvious when the inner iniiatable memberconsists of one annular chamber encompassing the circumference of thebody or core of the roller that any pressure exerted on any particularportion of the roller will crowd the air into other portions of saidroller, and will thereby render said roller impracticable for printingor lithographing purposes. A pneumatic roller has long been desired forthes'e purposes; but owing to certain defects due to the aforesaidcauses such a roller has not been within the reach of practicable usage.

The difficulties thusbriely outlined above are overcome by constructingthe interior in- Iiatable member in the form of a series of independentair-cells extending longitudinally throughout the length of the core orbody of the roller, as will be hereinafter 'more fully described,reference being made to the accompanying drawings, of which- Figure l isa longitudinal sectional elevation of my improvedlpneumatic roller onthe line y y of Fig. 2. Fig.l 2 is a section on the line @c of Fig. 1,showing the inner member inflated. Fig. 3 is a similar view showing theinner member collapsed or partially collapsed. Fig. 4 is a'section onthe line y yof Fig. 1, showing the inner member iniiated.

In a detail description of my invention simif-lar reference charactersindicate correspond- `in the drawings, the `primary object being toprovide a desirable number of independent air-cells, each of whichconfines within it a suitable quantity of air which cannot be forcedtherefrom when pressure is applied to the roller; but, on the contrary,such pressure will be resisted by the core Aadjacent to the particularair-cell affected by such pressure. In constructing the interior in-`iiatalo'le member from the single sheet of rubber @longitudinalportions of said sheet are vulcanized or otherwise suitably secured at Dtothe sleeve D', which surrounds the core A throughout its length, andthereby the series of independent4 air-cells B' are formed. This is atpresent found to be the most desirable way to construct theseindependent air-cells; but I do not wish to limit myself to anyparticular way of constructing such cells. 'In vulcanizing or otherwisesecuring the sheet C of rubber to the sleeve D the portions of saidrubber sheet adjacent to the ends are not united to said sleeve D'. tionis necessary in order to provide passages a, through which the air-cellsB are v,uniformly supplied with air frorna single air-valve b, locatedat one end of the roller. It is important that the air-cells B besupplied through a single air-valve b' in order that a uniform amount ofair may be fed This construc- IOO to said cells, and thereby the air beequally distributed throughout the surface of the roller. The ends D ofthe inner inflatable member extend around the ends of the body or core Ain proximity to the journals B and are made secure between said ends ofsaid core and the ends E' of the outer casing E. The outer casing Econsists of an elastic material, or, in the case of alithographing-roller, the said casing may be leather or any othersuitable material. One end of said outer casingissecured in position bymeans of screwsf, which pass through that end of the casing and throughwashers f and unite said end to the core. The other end of said outercasing is maintained in position by means of a circular Wire e ofsuitable thickness, which is embedded in the surrounding edge of saidouter casing and passes around the journal B at that end of the core.

I do not wish to limit myself to this specific manner of uniting theends of the outer and inner casings, as it is obvious a Variety of waysmay be found practicable for this purpose; nor do I `wish, as beforestated, to limit myself to the identical construction of the air-cellsB'.

Having described my invention, I claiml. In a pneumatic roller of thetype specied, a roller consisting of a core or body portion terminatingin journals, a series of independent air-cells extending around saidcore parallel therewith and throughout the length thereof and providinga series of uniformly compressible and expandible air-cushions aroundsaid core, the ends of said air-cells eX- tending over the ends of thecore and having passages for air to be introduced thereto through asingle air-Valve, and an outer casing having its ends extending over theends of the core of the roller and suitably united to said ends,substantially as set forth.

2. In a pneumatic roller for the purposes specified, a roller consistingof a core terminating in journals, a series of independent air-cellsparallel with and extending around said core, air-passages through whichair is uniformly supplied to said cells, a valve 1ocated at one end ofthe roller through which said cells are fed, an outer casing inclosingsaid air-cells, the ends of said outer casing being carried around theends of the body or core of the roller, and means for uniting the endsof the outer casing and the ends of the air-cells casing to said body orcore, substantially as set forth.

3. In a pneumatic roller for the purposes specified, an enlarged body orcore terminating in journals, an inner elastic casing hav ing portionsthereof united longitudinally to said core to provide a series ofindependent air-cells, passages between said air-cells by means of whichsaid cells are uniformly supplied with air, the ends of said casingbeing extended around the ends of said core, a valve located at one ofsaid ends, an outer casing inclosing said inner casing and having itsends extending around the ends of the core, and means for securing theends of said in ner and outer casings to the ends of said core,substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

ALOYS W. KLIN G.

Witnesses:

R. J. MCCARTY, G. M. THEOBALD.

